The electric backrest and headrest (driver's side) on my 1995 E320T (S124) refuses to move in either direction unless I first move a little foward or backward the bottom cushion. This routine applies every morning when I get into the car. Afterwords, the back and headrest operate normally. What could be wrong? Has anyone experience this?

A. Rosich
S320, 1998
E320T, 1995